Had Maharaja Ranjit Singh succeeded in donating Kohinoor to Jagannath Puri it would still be in India

The Kōh-i Nūr which means “Mountain of Light” in Persian, also spelled Koh-i-noor, Koh-e Noor or Koh-i-Nur, is a 105 carat (21.6 g) diamond (in its most recent cut) that was once the largest known diamond in the world. The Kōh-i Nūr originated in the state of Andhra Pradesh in India along with its double, the Darya-i-noor (the “Sea of Light”). It has belonged to various Hindu, Mughal, Turkic, Afghan, Sikh and British rulers who fought bitterly over it at various points in history and seized it as a spoil of war time and time again. It was finally seized by the East India Company and became part of the British Crown Jewels when Queen Victoria was proclaimed Empress of India in 1877.

Pic courtesy: @TrueIndology

Pic courtesy: @raptor941

Maharaja Ranjit Singh was crowned ruler of Punjab and willed the Koh-i-noor to the Jagannath Temple in Odisha from his deathbed in 1839. But after his death the British administrators did not execute his will.